21031113332032 has 14 divisors (see below), whose sum is σ = 41733615518378. Its totient is φ = 10515556665984.

The previous prime is 21031113332027. The next prime is 21031113332063. The reversal of 21031113332032 is 23023331113012.

It can be written as a sum of positive squares in only one way, i.e., 17389367043136 + 3641746288896 = 4170056^2 + 1908336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21031113331988 and 21031113332006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164305572843 + ... + 164305572970.

It is an arithmetic number, because the mean of its divisors is an integer number (2980972537027).

Almost surely, 2^{21031113332032} is an apocalyptic number.

It is an amenable number.

21031113332032 is a deficient number, since it is larger than the sum of its proper divisors (20702502186346).

21031113332032 is an equidigital number, since it uses as much as digits as its factorization.

21031113332032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328611145825 (or 328611145815 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21031113332032 its reverse (23023331113012), we get a palindrome (44054444445044).

The spelling of 21031113332032 in words is "twenty-one trillion, thirty-one billion, one hundred thirteen million, three hundred thirty-two thousand, thirty-two".